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8/12/2019 Brake_Control of Toyota Yaris 2007 US.pdf
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–1
ANTI-LOCK BRAKE SYSTEM
PRECAUTION
1. TROUBLESHOOTING PRECAUTION
• When there are malfunctions in the contact points of the
terminals or installation problems with any parts, removal
and installation of the suspected problem parts may return
the system to its normal condition, either entirely or
temporarily.
• In order to determine the location of the malfunction, be
sure to check the conditions from the time the malfunction
occurred, through data such as DTC and freeze frame
data outputs. Record this information before disconnecting
any connectors and removing or installing any parts.
• Since the anti-lock brake system may be influenced by
malfunctions in other systems, be sure to check for DTCs
in other systems.
• Be sure to remove and install the brake actuator and each
sensor with the ignition switch off, unless specified in theinspection procedures.
• When removing and installing the brake actuator and each
sensor, be sure to check that the normal display is output
during a test mode inspection and a DTC output inspection
after reinstalling all the parts.
• If the DTC of the CAN communication line is output, repair
the malfunction in the communication line and then
troubleshoot the anti-lock brake system.
• Since the CAN communication line has its own length and
route, it cannot be repaired temporarily with a bypass wire,
etc.
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BC–2BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
PARTS LOCATION
BRAKE ACTUATOR
FRONT SPEED SENSOR ROTOR LH
FRONT SPEED
SENSOR ROTOR RH
SKID CONTROL
SENSOR ROTOR LH
SKID CONTROL SENSOR ROTOR RH
SKID CONTROL
SENSOR WIRE LHSKID CONTROL SENSOR WIRE RH
HATCHBACK:
ENGINE ROOM R/B-ABS1/VSC1 FUSE
-ABS2/VSC2 FUSE
-AM2 FUSE
MASTER CYLINDER RESERVOIR
-BRAKE FLUID LEVEL
WARNING SWITCH
FRONT SPEED SENSOR LH
SKID CONTROL
SENSOR LH
FRONT SPEED
SENSOR RH
SKID CONTROL SENSOR RH
-SKID CONTROL ECU
C117856E04
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–3
DLC3
MAIN BODY ECU (DRIVER SIDE J/B)
PARKING BRAKE SWITCH
STOP LIGHT SWITCH
COMBINATION METER
- ABS WARNING LIGHT
- BRAKE WARNING LIGHT
- ECU-IG FUSE
- AM1 FUSE
HATCHBACK:
C118692E04
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BC–4BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
SEDAN:
FRONT SPEED
SENSOR RH
SKID CONTROL
SENSOR LH
FRONT SPEED SENSOR LH
SKID CONTROL SENSOR RH
ENGINE ROOM R/B
-ABS1/VSC1 FUSE
-ABS2/VSC2 FUSE
-AM2 FUSE
SKID CONTROL
SENSOR WIRE LH
SKID CONTROL SENSOR WIRE RH
FRONT SPEED
SENSOR ROTOR RH
FRONT SPEED SENSOR ROTOR LH
SKID CONTROL SENSOR ROTOR RH
SKID CONTROL
SENSOR ROTOR LH
BRAKE ACTUATOR
-SKID CONTROL ECU
MASTER CYLINDER RESERVOIR
-BRAKE FLUID LEVEL
WARNING SWITCH
C139617E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–5
SEDAN:
PARKING BRAKE SWITCH
STOP LIGHT SWITCH
COMBINATION METER
-ABS WARNING LIGHT
-BRAKE WARNING LIGHT
DLC3
MAIN BODY ECU (DRIVER SIDE J/B)
-ECU IG FUSE-AM1 FUSE
C139619E01
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BC–6BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
SYSTEM DIAGRAM
Speed Sensor
(with each wheel)
Stop Light Switch
Brake Actuator
Skid Control ECU
Motor Relay Solenoid Relay
Pump Motor Solenoid
: CAN Communication System
C122525E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–7
ECM
Power Steering ECU
Main Body ECU
Neutral Start Switch
TC Switch
TS Switch
Parking Brake Switch
ABS Warning Light
BRAKE Warning Light
Combination Meter
: CAN Communication System
C125123E02
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BC–8 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
HINT:
The skid control ECU forms a single unit with the brake
actuator.
(a) ABS (Anti-lock Brake System)
The ABS helps prevent the wheels from locking
when the brakes are applied firmly or on a slipperysurface.
(1) Operation description
The skid control ECU detects wheel lock
conditions by receiving vehicle speed signals
from each speed sensor, and sends control
signals to the pump motor and solenoid valve to
prevent the wheels from locking by controlling
the brake fluid pressure of each wheel cylinder.
The ABS warning light comes on when the ABS
system malfunctions.
:
:
Brake Actuator
Skid Control ECUEach Speed
Sensor
Pump Motor
Solenoid Valve
Combination Meter
ABS Warning Light
CAN Communication System
Each Wheel
Cylinder
Brake Fluid Pressure
C115099E02
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BC–10 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
2. ABS with EBD OPERATION
(a) Based on the signals received from each of the 4
wheel speed sensors, the skid control ECU
calculates the speed and deceleration of each
wheel, and checks the wheel slippage conditions.
The ECU controls the pressure holding valve and
pressure reduction valve in order to adjust the brake
fluid pressure of each wheel cylinder in accordance
with the slippage conditions.
3. FAIL SAFE FUNCTION
(a) When a failure occurs in the ABS system, the ABS
warning light comes on and its operation is
prohibited. In addition to this, when a failure which
disables the EBD operation occurs, the brake
warning light comes on and its operation is
prohibited.
If control is prohibited due to a malfunction during
operation, control is disabled gradually to avoid
sudden vehicle instability.
4. INITIAL CHECK(a) When the vehicle speed first reaches approximately
4 mph (6 km/h) or more after the ignition switch is
turned on, each solenoid valve and the motor of the
brake actuator are sequentially activated to perform
electrical checks. During the initial check, the
operating sound of the solenoid valve and motor
can be heard from the engine compartment, but this
does not indicate a malfunction.
5. FUNCTION OF COMPONENTS
Components Functions
Front speed sensor
(Semiconductor speed sensor, magnetic sensor rotor)
• Detects the wheel speed and sends a signal to the skid control ECU.• The front speed sensor (semiconductor speed sensor) with the integrated
bearing and the sensor rotor (magnetic sensor rotor) are installed on the front
axle hub.
• The magnetic sensor rotor is equipped with north and south poles (48 of each),
which are evenly spaced around its circumference.
• The magnetic field changes as the magnetic sensor rotor rotates. The
semiconductor speed sensor detects the change and outputs it as the vehicle
speed pulse.
Skid control sensor
(Semiconductor speed sensor, magnetic sensor rotor)
• The skid control sensor (semiconductor speed sensor) and the sensor rotor
(magnetic sensor rotor) are installed on the rear axle carrier.
• The skid control sensor has the same structure and functions as the front speed
sensor.
Skid control ECU
(Housed in brake actuator)
• Processes the signals from the sensors to control the ABS.
• Sends and receives control signals to and from the ECM via CAN
communication.
Brake actuator
• Consists of the master cylinder cut solenoid valve, holding solenoid valve, pump
motor, and reservoir, and adjusts the brake fluid pressure applied to each wheel
cylinder.
• Houses the skid control ECU.
Solenoid relay• Supplies power to each solenoid.
• Housed in the skid control ECU.
ABS warning light• Illuminates to inform the driver that a malfunction in the ABS has occurred.
• Blinks to indicate DTCs that relate to the ABS.
BRAKE warning light
• Illuminates to inform the driver that the parking brake is ON when the system is
normal, and when the brake fluid has decreased.
• Illuminates to inform the driver that a malfunction in the EBD has occurred.
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–13
CHECK FOR INTERMITTENT
PROBLEMS
1. CHECK FOR INTERMITTENT PROBLEMS
HINT:
A momentary interruption (open circuit) in the connectors
and/or wire harness between the sensors and ECUs can
be detected by using the ECU data list function of anintelligent tester.
(a) Turn the ignition switch off and connect the
intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Follow the prompts on the intelligent tester to
display the DATA LIST and select areas where a
momentary interruption should be monitored.
HINT:
• A momentary interruption (open circuit) cannot
be detected for 3 seconds after the ignition
switch is turned on (initial check).
• If the status remains on the ERROR display,
check for continuity between the ECU and the
sensors, or between ECUs.
• The ERROR display on the intelligent testerremains on for 1 second after the harness signal
changes from a momentary interruption (open
circuit) to normal condition.
Intelligent Tester
CAN VIM
DLC3
C115104E05
1 sec. 1 sec.1 sec.
Harness Signal:
Intelligent Tester Display:
OK
Momentary
interruption
ERROR
NORMAL
C106657E02
Item (Display)Measurement Item /
Range (Display)Normal Condition Diagnostic Note
FR SPD OPNFR speed sensor open detection /
ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal-
FL SPD OPNFL speed sensor open detection /
ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal-
RR SPD OPN RR speed sensor open detection/ ERROR or NORMAL
ERROR: Momentary interruptionNORMAL: Normal
-
RL SPD OPNRL speed sensor open detection /
ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal-
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BC–14 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
(d) While observing the screen, gently jiggle the
connector or wire harness between the ECU and
sensors, or between ECUs.
OK:
Display does not change.
HINT:
The connector and/or wire harness have a
momentary interruption (open circuit) if the display
changes. Repair or replace the connector and wire
harness if either of them is faulty.
F047126
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–15
TEST MODE PROCEDUREHINT:
• By switching the skid control ECU from normal mode to
test mode, abnormality detection sensitivity is enhanced
and troubleshooting can be conducted efficiently.
• Perform a sensor check in test mode after the speed
sensor or sensor rotor has been repaired or replaced.
• If the ignition switch is turned from on to ACC or off duringtest mode, DTCs related to the signal check function will
be erased.
• During test mode, the skid control ECU stores all DTCs
related to the signal check function, and the DTCs are
erased if normality is confirmed. Any remaining DTCs are
those indicating abnormalities that were found.
1. TEST MODE (SIGNAL CHECK) PROCEDURE (USING
INTELLIGENT TESTER)
(a) Turn the ignition switch off.
(b) Check that the steering wheel is in the straight-
ahead position.
(c) A/T: Check that the shift lever is in the P position
and apply the parking brake.
(d) M/T: Check that the shift lever is in neutral and apply
the parking brake.
(e) Connect the intelligent tester to the DLC3.
(f) Turn the ignition switch on.
(g) Turn the tester on.
(h) Switch the skid control ECU to test mode using the
intelligent tester.
Select the following menu items: DIAGNOSIS /
OBD/MOBD /select vehicle / ABS / SIGNAL
CHECK.
(i) Check that the ABS warning light blinks as shown in
the illustration.
HINT:
If the ABS warning light does not blink, perform
relevant troubleshooting procedures. The relevant
troubleshooting procedures are described in the
sections listed in the table below.
(j) Start the engine.
Intelligent Tester
CAN VIMDLC3
C115104E01
Blinking Pattern in TEST MODE:
0.12 Seconds 0.12 Seconds
ON
OFF
BR03904E22
Section Title See Page
ABS Warning Light does not Come ON BC-73
TS and CG Terminal Circuit BC-84
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BC–16 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
2. SPEED SENSOR CHECK (USING INTELLIGENT
TESTER)
(a) Check that the ABS warning light is blinking as
shown in the illustration.
(b) Check the speed sensor signal.
(1) Drive the vehicle straight forward at a speed of
28 mph (45 km/h) or more for several seconds.
(2) Check that the ABS warning light goes off.
HINT:
• The sensor check may not be completed if
one or more wheels spin or the steering
wheel is turned.
• If the speed sensor check is commenced
while the steering wheel is turned, the ABS
warning light may come on after the low
speed check is finished.
• The ABS warning light comes on immediately
when an abnormality is detected.
• When the speed sensor signal is normal, the
ABS warning light goes off while the vehicle isdriven at 28 mph (45 km/h) or more and
blinks in the test mode pattern while
stationary.
• Do not drive the vehicle at a speed of 50 mph
(80 km/h) or more after the ABS warning light
turns off, because test mode DTCs are set
again when the vehicle speed exceeds 50
mph (80km/h).
Blinking Pattern in TEST MODE:
0.12 Seconds 0.12 Seconds
ON
OFF
BR03904E22
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–17
(3) Stop the vehicle.
3. END SENSOR CHECK (USING INTELLIGENT
TESTER)
(a) When the sensor check is successfully completed,the ABS warning light blinks in the test mode pattern
when the vehicle is stopped, and goes off when the
vehicle is driven.
NOTICE:
If the sensor check is not completed, the ABS
warning light blinks even while the vehicle is
driven and the ABS does not operate.
4. READ SIGNAL CHECK FUNCTION DTCS (USING
INTELLIGENT TESTER)
(a) Read the DTC(s) by following the instructions on the
tester screen.
HINT:See the list of DTCs (refer to step 9).
5. TEST MODE (SIGNAL CHECK) PROCEDURE (USING
SST CHECK WIRE)
(a) Turn the ignition switch off.
(b) Check that the steering wheel is in the straight-
ahead position.
(c) A/T: Check that the shift lever is in the P position
and apply the parking brake.
(d) M/T: Check that the shift lever is in neutral and apply
the parking brake.
Vehicle Speed: mph (km/h)
ABS Warning Light
Time
ON
OFF
28 (45)
3 (5)
0 (0)
Low Speed Check Middle Speed
Check
Blinking pattern in speed sensor check:
C115115E01
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BC–18 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
(e) Using SST, connect terminals TS and CG of the
DLC3.
SST 09843-18040
(f) Turn the ignition switch on.
(g) Check that the ABS warning light blinks as shown in
the illustration.
HINT:
If the ABS warning light does not blink, perform
relevant troubleshooting procedures. The relevant
troubleshooting procedures are described in the
sections listed in the table below.
(h) Start the engine.
6. SPEED SENSOR CHECK (USING SST CHECK WIRE)
(a) Check that the ABS warning light blinks as shown in
the illustration.
(b) Check the speed sensor signal.
(1) Drive the vehicle straight forward at a speed of
28 mph (45km/h) or more for several seconds,
and then step on the brake pedal.
(2) Check that the ABS warning light goes off.
HINT:• The sensor check may not be completed if
one or more wheels spin or the steering
wheel is turned.
• If the speed sensor check is commenced
while the steering wheel is turned, the ABS
warning light may come on after the low
speed check is finished.
• The ABS warning light comes on immediately
when an abnormality is detected.
• When the speed sensor signal is normal, the
ABS warning light goes off while the vehicle isdriven at 28 mph (45 km/h) or more and
blinks in the test mode pattern while
stationary.
• Do not drive the vehicle at a speed of 50 mph
(80 km/h) or more after the ABS warning light
turns off, because test mode DTCs are set
again when the vehicle speed exceeds 50
mph (80km/h).
161514131211109
87654321
DLC3:CG
TSF100115E01
Blinking Pattern in TEST MODE:
0.12 Seconds 0.12 Seconds
ON
OFF
BR03904E22
Section Title See Page
ABS Warning Light does not Come ON BC-73
TS and CG Terminal Circuit BC-84
Blinking Pattern in TEST MODE:
0.12 Seconds 0.12 Seconds
ON
OFF
BR03904E22
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–19
(3) Stop the vehicle.
7. END SENSOR CHECK (USING SST CHECK WIRE)
(a) When the sensor check is successfully completed,
the ABS warning light blinks in the test mode patternwhen the vehicle is stopped, and goes off when the
vehicle is driven.
NOTICE:
If the sensor check is not completed, the ABS
warning light blinks even while the vehicle is
driven and the ABS does not operate.
8. READ SIGNAL CHECK FUNCTION DTCS (USING SST
CHECK WIRE)
(a) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843-18040
(b) Turn the ignition switch on.(c) Read the number of blinks of the ABS warning light.
HINT:
• See the list of DTCs (refer to step 9).
Vehicle Speed: mph (km/h)
ABS Warning Light
Time
ON
OFF
28 (45)
3 (5)
0 (0)
Low Speed Check Middle Speed
Check
Blinking pattern in speed sensor check:
C115115E01
161514131211109
87654321
DLC3:CG
TCF100115E02
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BC–20 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
• If all the sensors are normal, a normal system
code is output (the light comes on for 0.25
seconds at intervals of 0.25 seconds).
(d) After the check, disconnect the SST from terminals
TC and CG of the DLC3.
(e) Turn the ignition switch off.
9. SPEED SENSOR CHECK FUNCTION DTCs
HINT:
• The DTCs in this table are only output in test mode.
• Detection of DTCs from C1271/71 to C1274/74 is
completed before the vehicle speed reaches 3 mph (5
km/h).
• Detection of DTCs from C1275/75 to C1278/78 is
completed several seconds after the vehicle speed
exceeds 28 mph (45 km/h).
• C1271/71 - C1274/74: Speed output from only one
wheel is extremely low despite other wheel speed
outputs reaching 3 mph (5 km/h).
• C1275/75 - C1278/78: Abnormal speed sensor output
frequency is as shown in the illustration.
Blinking Pattern in TEST MODE:
0.12 Seconds 0.12 Seconds
ON
OFF
BR03904E22
Code No. Diagnosis Trouble Areas
C1271/71 Low output signal of front speed sensor RH
• Front speed sensor RH
• Front speed sensor RH circuit
• Sensor installation
• Foreign matter on sensor tip or sensor rotor
C1272/72 Low output signal of front speed sensor LH
• Front speed sensor LH
• Front speed sensor LH circuit
• Sensor installation
• Foreign matter on sensor tip or sensor rotor
C1273/73 Low output signal of rear speed sensor RH
• Skid control sensor RH
• Skid control sensor RH circuit
• Sensor installation
C1274/74 Low output signal of rear speed sensor LH
• Skid control sensor LH
• Skid control sensor LH circuit
• Sensor installation
C1275/75 Abnormal change in output signal of front speed
sensor RH
• Front speed sensor RH
• Front speed sensor RH circuit
• Foreign matter on sensor tip or sensor rotor
C1276/76 Abnormal change in output signal of front speed
sensor LH
• Front speed sensor LH
• Front speed sensor LH circuit
• Foreign matter on sensor tip or sensor rotor
C1277/77 Abnormal change in output signal of rear speed
sensor RH
• Skid control sensor RH
• Skid control sensor RH circuit
C1278/78 Abnormal change in output signal of rear speedsensor LH
• Skid control sensor LH• Skid control sensor LH circuit
Example:
Normal:
Abnormal:
F100272E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–21
PROBLEM SYMPTOMS TABLEIf no DTCs are displayed during the DTC check but the
problem still occurs, check the circuits for each problem
symptom in the order given in the table below and proceed to
the relevant troubleshooting page.
NOTICE:
When replacing the brake actuator or sensor, turn the
ignition switch off.ANTI-LOCK BRAKE SYSTEM
Symptom Suspected area See page
ABS and/or EBD does not operate
1. Check DTC again and make sure that normal system code
displayed.BC-25
2. IG power source circuit BC-59
3. Front speed sensor circuit BC-37
4. Skid control sensor circuit BC-44
5. Check brake actuator using intelligent tester. (Check brake
actuator operation using active test function.) If abnormal,
check hydraulic circuit for leakage.
BC-34
6. If symptoms still occur even after above circuits in
suspected areas inspected and proved to be normal, replacebrake actuator (skid control ECU).
BC-89
ABS and/or EBD does not operate efficiently
1. Check DTC again and make sure that normal system code
displayed.BC-25
2. Front speed sensor circuit BC-37
3. Skid control circuit BC-44
4. Stop light switch circuit BC-64
5. Check brake actuator using intelligent tester. (Check brake
actuator operation using active test function.) If abnormal,
check hydraulic circuit for leakage.
BC-34
6. If symptoms still occur even after above circuits in
suspected areas inspected and proved to be normal, replace
brake actuator (skid control ECU).
BC-89
Sensor signal check cannot be done1. TS and CG terminal circuit BC-84
2. Brake actuator (skid control ECU) BC-89
DTC check cannot be done
1. Check DTC again and make sure that normal system code
displayed.BC-25
2. TC and CG terminal circuit BC-81
3. If symptoms still occur even after above circuits in
suspected areas inspected and proved to be normal, replace
brake actuator (skid control ECU).
BC-89
ABS warning light remains on1. ABS warning light circuit BC-70
2. Brake actuator (skid control ECU) BC-89
ABS warning light does not come on1. ABS warning light circuit BC-73
2. Brake actuator (skid control ECU) BC-89
BRAKE warning light remains on1. BRAKE waning light circuit BC-74
2. Brake actuator (skid control ECU) BC-89
BRAKE warning light does not come on1. BRAKE warning light circuit BC-79
2. Brake actuator (skid control ECU) BC-89
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BC–22 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
TERMINALS OF ECU
1. Terminals of ECU
Symbols (Terminals No.) Terminal Description
+BS (A15-1) Solenoid valve power supply
GND1 (A15-2) Skid control ECU ground
CANL (A15-5) CAN communication line L
CANH (A15-6) CAN communication line H
FL- (A15-8) Front LH wheel speed signal input
FL+ (A15-9) Front LH wheel speed sensor power supply
STP (A15-10) Stop light switch input
RL+ (A15-11) Rear LH wheel speed sensor power supply
RL- (A15-12) Rear LH wheel speed signal input
+BM (A15-23) Motor relay power supply
GND2 (A15-24) Actuator pump motor ground
IG1 (A15-25) ECU power supply
FR- (A15-30) Front RH wheel speed signal input
FR+ (A15-31) Front RH wheel speed sensor power supply
RR+ (A15-33) Rear RH wheel speed sensor power supply
RR- (A15-34) Rear RH wheel speed signal input
Skid Control ECU:
A15
C110609E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–23
2. Terminal inspection
(a) Disconnect the connector and measure theresistance and voltage on the wire harness side.
HINT:
The voltage cannot be measured with the connector
connected to the skid control ECU as the connector
is water resistant.
Symbols (Terminals No.) Terminal Description
PKB (4C-2) Parking brake switch input
4H 4D 4C
4E
4J
4F
4G
4A
4K 4A 4B
4D
4H
4E
4G
4L
4K
4F
4J
4C
4B
4L
Main Body ECU (Rear View):
E114510E04
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BC–24 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
Standard:
Standard resistance:
Symbols Wiring Color Terminal Description Conditions Specified Conditions
+BS (A15-1) - Body
groundW - Body ground
Solenoid valve power
supply Always 11 to 14 V
GND1 (A15-2) - Body
groundW-B - Body ground Skid control ECU ground Always Below 1 Ω
STP (A15-10) - Body
groundG - Body ground Stop light switch input
Stop light switch ON
Brake pedal depressed8 to 14 V
STP (A15-10) - Body
ground
G - Body ground Stop light switch inputStop light switch OFF
Brake pedal released
Below 1.5 V
+BM (A15-23) - Body
groundB - Body ground Motor relay power supply Always 11 to 14 V
GND2 (A15-24) - Body
groundW-B - Body ground
Actuator pump motor
ground Always Below 1 Ω
IG1 (A15-25) - Body
groundB - Body ground ECU power supply Ignition switch on 11 to 14 V
Skid Control ECU
(harness side connector):
A15
C107496E01
Symbols Wiring Color Terminal Description Conditions Specified Conditions
PKB (4C-2) - Body ground Y - Body ground Parking brake switch input Parking brake switch ON Below 1 Ω
PKB (4C-2) - Body ground Y - Body ground Parking brake switch input Parking brake switch OFF 10 kΩ or higher
1 2 3 4 5 6 7 8
9 1 0 11 1 2 1 3 1 4 1 5 1 6
Main Body ECU (harness side connector):
4C
C118700E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–25
DIAGNOSIS SYSTEM
1. DIAGNOSIS
If the skid control ECU detects a malfunction, the ABS
and/or BRAKE warning lights come on in accordance
with the trouble area, to warn the driver.
The table below indicates which lights come on when
there are malfunctions in particular functions.
: Light ON, -: Light OFF
HINT:
• The DTCs can be read by connecting SST (09843-
18040) between the TC and CG terminals of the
DLC3 and observing the blinking pattern of the ABS
warning light, or by using an intelligent tester (See
page BC-25).
• This system has a sensor signal check function (See
page BC-14).
2. WARNING LIGHT CHECK
(a) Release the parking brake lever.NOTICE:
Before releasing the parking brake lever, set
chocks to hold the vehicle for safety.
HINT:
When the parking brake is applied or the brake fluid
level is low, the brake warning light comes on.
(b) When the ignition switch is turned on, check that the
ABS warning light and brake warning light come on
and go off in approximately 3 seconds.
HINT:
If the warning lights do not illuminate, confirm
whether the bulbs have burned out, and also checkfor CAN communication system DTCs, since the
skid control ECU and combination meter are
connected by the CAN communication line.
If the warning light remains on, perform the relevant
troubleshooting procedures. The relevant
troubleshooting procedures are described in the
sections listed in the table below.
ABS Warning Light:
BRAKE Warning Light:
USA: Canada:
USA: Canada:
C115112E02
Item / Trouble Area ABS System EBD System Skid Control ECU
ABS warning light
Brake warning light -
ABS Warning Light:
BRAKE Warning Light:
USA: Canada:
USA: Canada:
C115112E02
Section Title See Page
ABS Warning Light Remains ON BC-70
Brake Warning Light Remains ON BC-74
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BC–26 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
DTC CHECK / CLEAR
1. DTC CHECK (USING INTELLIGENT TESTER)
(a) Check DTCs.
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch on.
(3) Turn the tester on.
(4) Read the DTCs using the intelligent tester.
Select the following menu items: DIAGNOSIS /OBD/MOBD / select vehicle / ABS / DTC INFO /
TROUBLE CODES.
2. DTC CLEAR (USING INTELLIGENT TESTER)
(a) Clear the DTCs.
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch on.
(3) Turn the tester on.
(4) Clear the DTCs using the intelligent tester.
Select the following menu items: DIAGNOSIS /
OBD/MOBD / select vehicle / ABS / DTC INFO /
CLEAR CODES.3. DTC CHECK (USING SST CHECK WIRE)
(a) Check DTCs.
(1) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843-18040
(2) Turn the ignition switch on.
(3) Read 2-digit DTCs indicated by the blinking of
the ABS warning light on the combination meter.
HINT:
• If the ABS warning light does not blink,
perform relevant troubleshooting procedures.
The relevant troubleshooting procedures aredescribed in the sections listed in the table
below.
Intelligent Tester
CAN VIMDLC3
C115104E01
161514131211109
87654321
DLC3:CG
TCF100115E02
Section Title See Page
ABS Warning Light does not Come ON BC-73
TC and CG Terminal Circuit BC-81
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–27
• As an example, the blinking patterns of the
normal system code and DTCs 11 and 21 are
shown below.
• DTCs are explained in "DIAGNOSTICTROUBLE CODE CHART" (See page BC-
31).
(4) After completing the check, disconnect SST
from terminals TC and CG of the DLC3, and turn
the ignition switch off.
HINT:
If 2 or more malfunctions are detected at the
same time, the lowest numbered DTC is
displayed first.
4. DTC CLEAR (USING SST CHECK WIRE)
(a) Clear the DTCs.(1) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843-18040
(2) Turn the ignition switch on.
(3) Clear the DTCs stored in the skid control ECU
by depressing the brake pedal 8 times or more
within 5 seconds.(4) Check that the warning light blinks in the normal
system code pattern.
(5) Remove SST from the terminals of the DLC3.
(6) Turn the ignition switch off.
HINT:
The DTCs cannot be cleared by removing the
battery cable or ECU-IG fuse.
5. END OF DTC CHECK/CLEAR
(a) Turn the ignition switch on.
(b) Check that the ABS warning light goes off within
approximately 3 seconds.
Normal System Code: Indication of DTCs 11 and 21:
0.25 sec.0.25 sec.2 sec.
ON
OFF
ON
OFF
2.5 sec.
1.5 sec.
4 sec.
0.5 sec.
0.5 sec. 4 sec.
Repeat
DTC 11 DTC 21
F100113E02
161514131211109
87654321
DLC3:CG
TCF100115E02
BR03890
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BC–30 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
FAIL-SAFE CHART
1. FAIL SAFE OPERATION
• If there is a problem with any sensor signals or
actuator systems, the skid control ECU prohibits the
power supply to the brake actuator.
ABS control is prohibited, but EBD control continues
as far as possible. If EBD control is impossible, the
BRAKE warning light comes on to warn the driver(See page BC-24).
• If any system components have malfunctions before
starting control, the operation stops immediately. If
any system components have malfunctions during
control, the control stops gradually so as not to trigger
any sudden changes in the vehicle conditions.
If it is impossible to control the systems, the warning
light comes on to inform the driver of the malfunctions
in the systems (See page BC-24).
HINT:
• If the ABS system malfunctions, the brake system
operates normally without the ABS system control.
• If the brake actuator malfunctions, a gradual loss of
brake performance is expected, and ABS system
control is prohibited.
ABS and EBD system
Malfunction Area Fail-Safe Operation
ABS system ABS control prohibited
EBD system ABS and EBD control prohibited
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–31
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
By referring to the DATA LIST displayed on the intelligent
tester, the values and status of parts such as switches,
sensors and actuators can be read without removing any
parts. Reading the DATA LIST as the first step of
troubleshooting is one method of shortening diagnostictime.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the intelligent tester on.
(d) Select the following menu items: DIAGNOSIS /
OBD / MOBD / select vehicle / ABS / DATA LIST.
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display)Measurement Item / Range
(Display)Normal Condition Diagnostic Notes
ABS WARN LAMP ABS warning light / ON or OFFON: ABS warning light ON
OFF: ABS warning light OFF-
BRAKE WARN LAMP BRAKE warning l ight / ON or OFFON: BRAKE warning light ON
OFF: BRAKE warning light OFF-
STOP LAMP SW Stop light switch / ON or OFFON: Brake pedal depressed
OFF: Brake pedal released-
PARKING BRAKE SW Parking brake switch / ON or OFFON: Parking brake applied
OFF: Parking brake released-
DECELERAT SENDeceleration sensor reading /
min.: -25.11 m/s, max.: 24.91 m/s
Approximately 0+-0.13 while
stationary-
FORWARD&REA G Forward and rearward Gmin.: -25.11 m/s2
max.: 24.91 m/s2-
FR WHEEL SPD
Wheel speed sensor (FR) reading
/ min.: 0 mph (0 km/h), max.: 202
mph (326 km/h)
Actual wheel speedSimilar to speed indicated on
speedometer
FL WHEEL SPD
Wheel speed sensor (FL) reading
/ min.: 0 mph (0 km/h), max.: 202
mph (326 km/h)
Actual wheel speedSimilar to speed indicated on
speedometer
RR WHEEL SPD
Wheel speed sensor (RR)
reading / min.: 0 mph (0 km/h),
max.: 202 mph (326 km/h)
Actual wheel speedSimilar to speed indicated on
speedometer
RL WHEEL SPD
Wheel speed sensor (RL) reading
/ min.: 0 mph (0 km/h), max.: 202mph (326 km/h)
Actual wheel speed Similar to speed indicated onspeedometer
VEHICLE SPD
Maximum speed sensor reading /
min.: 0 mph (0 km/h), max.: 202
mph (326 km/h)
Actual wheel speedSimilar to speed indicated on
speedometer
FR WHEEL ACCELFR wheel acceleration / min.: -
25.11 m/s2, max.: 24.91 m/s2
min.: -200.84 m/s2
max.: 199.27 m/s2-
FL WHEEL ACCELFL wheel acceleration / min.: -
25.11 m/s2, max.: 24.91 m/s2
min.: -200.84 m/s2
max.: 199.27 m/s2-
RR WHEEL ACCELRR wheel acceleration / min.: -
25.11 m/s2, max.: 24.91 m/s2
min.: -200.84 m/s2
max.: 199.27 m/s2-
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BC–32 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
HINT:
• *1: SFRH (S: Solenoid, F: Front, R: Right, H:
Holding)
• *2: SFRR (S: Solenoid, F: Front, R: Right, R:
Reduction)
• *3: SFLH (S: Solenoid, F: Front, L: Left, H:
Holding)
• *4: SFLR (S: Solenoid, F: Front, L: Left, R:
Reduction)
• *5: SRRH (S: Solenoid, R: Rear, R: Right, H:
Holding)
• *6: SRRR (S: Solenoid, R: Rear, R: Right, R:
Reduction)
RL WHEEL ACCELRL wheel acceleration / min.: -
25.11 m/s2, max.: 24.91 m/s2
min.: -200.84 m/s2
max.: 199.27 m/s2-
FR ABS STATUSFR wheel ABS control status / ON
or OFFON: During control -
FL ABS STATUSFL wheel ABS control status / ON
or OFFON: During control -
RR ABS STATUSRR wheel ABS control status /
ON or OFFON: During control -
RL ABS STATUSRL wheel ABS control status / ON
or OFFON: During control -
SOL RELAY Solenoid relay / ON or OFFON: Solenoid relay ON
OFF: Solenoid relay OFF-
ECB MTR RELAY ABS Motor relay / ON or OFFON: Motor relay ON
OFF: Motor relay OFF-
SFRH (*1) ABS solenoid (SFRH) / ON or
OFF
ON: Operates
OFF: Does not operate-
SFRR (*2) ABS solenoid (SFRR) / ON or
OFF
ON: Operates
OFF: Does not operate-
SFLH (*3) ABS solenoid (SFLH) / ON orOFF ON: OperatesOFF: Does not operate -
SFLR (*4) ABS solenoid (SFLR) / ON or
OFF
ON: Operates
OFF: Does not operate-
SRRH (*5) ABS solenoid (SRRH) / ON or
OFF
ON: Operates
OFF: Does not operate-
SRRR (*6) ABS solenoid (SRRR) / ON or
OFF
ON: Operates
OFF: Does not operate-
SRLH (*7) ABS solenoid (SRLH) / ON or
OFF
ON: Operates
OFF: Does not operate-
SRLR (*8) ABS solenoid (SRLR) / ON or
OFF
ON: Operates
OFF: Does not operate-
FR SPD OPNFR speed sensor open detection /
ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal
-
FL SPD OPNFL speed sensor open detection /
ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal-
RR SPD OPNRR speed sensor open detection
/ ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal-
RL SPD OPNRL speed sensor open detection /
ERROR or NORMAL
ERROR: Momentary interruption
NORMAL: Normal-
#DTCNumber of recorded DTCs / min.:
0, max.: 255
min.: 0
max.: 255-
Item (Display)Measurement Item / Range
(Display)Normal Condition Diagnostic Notes
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BC–34 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
SFLR Turns ABS solenoid (SFLR) ON or OFFOperation sound of solenoid (clicking sound)
can be heard
SFLH Turns ABS solenoid (SFLH) ON or OFFOperation sound of solenoid (clicking sound)
can be heard
SFRR Turns ABS solenoid (SFRR) ON or OFFOperation sound of solenoid (clicking sound)
can be heard
SFRH Turns ABS solenoid (SFRH) ON or OFF
Operation sound of solenoid (clicking sound)
can be heard
Item (Display) Test Details Diagnostic Notes
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–35
DIAGNOSTIC TROUBLE CODE CHARTNOTICE:
When replacing any parts, turn the ignition switch off.
HINT:
• If no abnormality is found when inspecting parts, check the
skid control ECU and check for poor contact at ground
points.
• If a DTC is displayed during the DTC check, check thecircuit for the DTC listed in the table below. For details of
each DTC, refer to the page indicated.
• When 2 or more DTCs are detected, perform circuit
inspections one by one until the problem is identified.
• All DTCs in the table below are detected in accordance
with 1 trip detection logic.
DTC chart:
DTC No. Detection Item Trouble Areas See page
C0200/31 (*
1)
Right Front Wheel Speed Sensor
Signal
1. Front speed sensor RH
2. Front speed sensor RH circuit
3. Sensor installation
4. Foreign matter on sensor tip orsensor rotor
5. Brake actuator (skid control
ECU)
BC-37
C0205/32 (*1)Left Front Wheel Speed Sensor
Signal
1. Front speed sensor LH
2. Front speed sensor LH circuit
3. Sensor installation
4. Foreign matter on sensor tip or
sensor rotor
5. Brake actuator (skid control
ECU)
BC-37
C0210/33 (*1)Right Rear Wheel Speed Sensor
Signal
1. Skid control sensor RH
2. Skid control sensor RH circuit
3. Sensor installation
4. Brake actuator (skid control
ECU)
BC-44
C0215/34 (*1)Left Rear Wheel Speed Sensor
Signal
1. Skid control sensor LH
2. Skid control sensor LH circuit
3. Sensor installation
4. Brake actuator (skid control
ECU)
BC-44
C0226/21 SFR Solenoid Circuit Brake actuator BC-51
C0236/22 SFL Solenoid Circuit Brake actuator BC-51
C0246/23 SRR Solenoid Circuit Brake actuator BC-51
C0256/24 SRL Solenoid Circuit Brake actuator BC-51
C0273/13 Open in ABS Motor Relay Circuit
1. ABS1/VSC1 fuse
2. Wire harness (+ BM circuit)
3. Brake actuator (skid control
ECU)
BC-54
C0274/14Short to B+ in ABS Motor Relay
Circuit
1. ABS1/VSC1 fuse
2. Wire harness (+ BM circuit)
3. Brake actuator (skid control
ECU)
BC-54
C0278/11Open in ABS Solenoid Relay
Circuit
1. ABS2/VSC2 fuse
2. Wire harness (+BS)
3. Brake actuator (skid control
ECU)
BC-57
C0279/12Short to B+ in ABS Solenoid
Relay Circuit
1. ABS2/VSC2 fuse
2. Wire harness (+BS)
3. Brake actuator (skid control
ECU)
BC-57
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BC–36 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
HINT:*1:
Even after the trouble areas are repaired, the ABS warning
light will not go off unless the following operations are
performed.
1. Drive the vehicle at 12 mph (20 km/h) for 30 seconds or
more and check that the ABS warning light goes off.
2. Clear the DTC(s).
Test Mode DTC:
C1235/35Foreign Object is Attached on Tip
of Front Speed Sensor RH
1. Front speed sensor RH
2. Front speed sensor RH circuit
3. Foreign matter on sensor tip or
sensor rotor
4. Brake actuator (skid control
ECU)
BC-37
C1236/36Foreign Object is Attached on Tip
of Front Speed Sensor LH
1. Front speed sensor LH
2. Front speed sensor LH circuit
3. Foreign matter on sensor tip or
sensor rotor
4. Brake actuator (skid control
ECU)
BC-37
C1238/38Foreign Object is Attached on Tip
of Rear Speed Sensor RH
1. Skid control sensor RH
2. Skid control sensor RH circuit
3. Brake actuator (skid control
ECU)
BC-44
C1239/39Foreign Object is Attached on Tip
of Rear Speed Sensor LH
1. Skid control sensor LH
2. Skid control sensor LH circuit
3. Brake actuator (skid control
ECU)
BC-44
C1241/41Low Battery Positive Voltage or
Abnormally High Battery Positive
Voltage
1. Battery
2. Charging system
3. ECU-IG fuse4. AM1 fuse
5. IG1 relay
6. Brake actuator (skid control
ECU)
BC-59
C1249/49 Open in Stop Light Switch Circuit
1. Stop light switch
2. Stop light switch circuit
3. Brake actuator (skid control
ECU)
BC-64
C1251/51 (*1) Open in Pump Motor Circuit Brake actuator BC-68
U0073/94Control Module Communication
Bus OFFCAN communication system BC-69
DTC No. Detection Item Trouble Areas See page
DTC No. Detection Item Trouble Areas See page
C1271/71Low Output Signal of Front Speed
Sensor RH (Test Mode DTC)
1. Front speed sensor RH
2. Front speed sensor RH circuit
3. Sensor installation
4. Foreign matter on sensor tip or
sensor rotor
BC-37
C1272/72Low Output Signal of Front Speed
Sensor LH (Test Mode DTC)
1. Front speed sensor LH
2. Front speed sensor LH circuit
3. Sensor installation
4. Foreign matter on sensor tip or
sensor rotor
BC-37
C1273/73Low Output Signal of Rear Speed
Sensor RH (Test Mode DTC)
1. Skid control sensor RH
2. Skid control sensor RH circuit
3. Sensor installation
BC-44
C1274/74Low Output Signal of Rear Speed
Sensor LH (Test Mode DTC)
1. Skid control sensor LH
2. Skid control sensor LH circuit
3. Sensor installation
BC-44
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–39
(d) Turn the motor relay ON, and check that the pedal
can be depressed.
NOTICE:
Do not keep the motor relay ON for more than 5
seconds continuously. Allow intervals of at least
20 seconds between consecutive operations.
(e) Turn the motor relay OFF and release the brake
pedal.
6. INSPECT BRAKE ACTUATOR SOLENOID (for Rear
Left Wheel)
NOTICE:
Never turn ON a solenoid in any manner other than
described below.
(a) With the brake pedal depressed, perform the
following operations.
(b) Turn the SRLH and SRLR solenoids ON
simultaneously, and check that the pedal cannot be
depressed further.
NOTICE:
Do not keep the motor relay ON for more than 5seconds continuously. Allow intervals of at least
20 seconds between consecutive operations.
(c) Turn the SRLH and SRLR solenoids OFF
simultaneously, and check that the pedal can be
depressed further.
(d) Turn the motor relay ON, and check that the pedal
can be depressed.
NOTICE:
Do not keep the motor relay ON for more than 5
seconds continuously. Allow intervals of at least
20 seconds between consecutive operations.
(e) Turn the motor relay OFF and release the brake
pedal.
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BC–40 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
DESCRIPTIONThe speed sensors detect the wheel speeds and send appropriate signals to the skid control ECU.
Speed sensor rotors have rows of alternating N and S magnetic poles, and their magnetic fields changeas the rotors turn.
The speed sensors detect those magnetic changes and send pulse signals to the skid control ECU. The
ECU monitors the wheel speeds through these pulse signals to control the ABS control system.
DTC C0200/31 Right Front Wheel Speed Sensor Signal
DTC C0205/32 Left Front Wheel Speed Sensor Signal
DTC C1235/35Foreign Object is Attached on Tip of Front
Speed Sensor RH
DTC C1236/36Foreign Object is Attached on Tip of Front
Speed Sensor LH
DTC C1271/71Low Output Signal of Front Speed Sensor RH
(Test Mode DTC)
DTC C1272/72Low Output Signal of Front Speed Sensor LH
(Test Mode DTC)
DTC C1275/75Abnormal Change in Output Signal of Front
Speed Sensor RH (Test Mode DTC)
DTC C1276/76Abnormal Change in Output Signal of Front
Speed Sensor LH (Test Mode DTC)
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BC–42 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
WIRING DIAGRAM
INSPECTION PROCEDURENOTICE:
Check the speed sensor signal in test mode after cleaning or replacement (See page BC-14).
(a) Connect the intelligent tester to the DLC3.(b) Turn the ignition switch on.
(c) Turn the tester on.
(d) Using the intelligent tester, check for any momentary
interruption in the wire harness and connector of the
speed sensor.
Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / DATA LIST.
DATA LIST: ABS
OK:
There are no momentary interruptions.
HINT:
Perform the above inspection before removing the
sensor and connector.
1 CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)
Skid Control ECU
Front SpeedSensor LH
Front Speed
Sensor RH
FL+
FR-
FL-
FR+
C117849E05
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Measurement Item / Range (Display) Normal Condition
FR SPD OPNFR speed sensor open detection / ERROR or
NORMAL
ERROR: Momentary interruption
NORMAL: Normal
FL SPD OPNFL speed sensor open detection / ERROR or
NORMAL
ERROR: Momentary interruption
NORMAL: Normal
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–43
NG
OK
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and drive the vehicle.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / DATA LIST.
(e) Select the item "FR (FL) WHEEL SPD" in the DATA LIST
and read the value displayed on the intelligent tester.
DATA LIST: ABS
(f) Check that there is no significant difference between the
speed value displayed on the intelligent tester and the
speed value displayed on the speedometer when driving
the vehicle.
OK:
There is no significant difference in the displayed
speed values.
HINT:
There is a tolerance of +- 10% in the speedometer
indication.
NG
OK
(a) Perform a TEST MODE inspection and check for DTCs
(See page BC-14).
OK:
No DTC output.
NG
OK
(a) Clear the DTC(s) (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at a speed of 12 mph (20 km/h) or more
for at least 60 seconds.
(d) Check if the same DTC(s) is output (See page BC-25).
REPAIR OR REPLACE HARNESS OR
CONNECTOR
2 READ VALUE OF DATA LIST (FRONT SPEED SENSOR)
Item (Display) Measurement Item / Range (Display) Normal Condition
FR WHEEL SPDWheel speed sensor (FR) reading : min.: 0 mph
(0 km/h), max.: 202 mph (326 km/h)Similar to speed indicated on speedometer
FL WHEEL SPD Wheel speed sensor (FL) reading : min.: 0 mph(0 km/h), max.: 202 mph (326 km/h)
Similar to speed indicated on speedometer
Go to step 5
3 PERFORM TEST MODE INSPECTION (SIGNAL CHECK)
REPLACE FRONT SPEED SENSOR
4 RECONFIRM DTC
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BC–44 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
Result
B
A
(a) Check that the speed sensor installation bolt is tightened
properly.
OK:
The installation bolt is tightened properly.
Torque: 8.5 N*m (87 kgf*cm, 75 in.*lbf)
NG
OK
(a) Visually check the speed sensor for deformation and
damage.
OK:
No deformation or damage.No gap between the sensor and front steering
knuckle.
NG
OK
(a) Remove the speed sensor (See page BC-95).
(b) Check the sensor tip.
OK:
No scratches or foreign matter on the sensor tip.
NG
OK
Result Proceed to
DTC not output A
DTC output B
Go to step 11
END
5 CHECK FRONT SPEED SENSOR INSTALLATION
TIGHTEN BOLT PROPERLY
6 CHECK FRONT SPEED SENSOR
OK NGBR03795E09
REPLACE FRONT SPEED SENSOR
7 CHECK SPEED SENSOR TIP
CLEAN OR REPLACE SPEED SENSOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–45
(a) Disconnect the skid control ECU connector.
(b) Disconnect the front speed sensor connector.
(c) Measure the resistance.
Standard resistance (LH)
Standard resistance (RH)
NG
OK
(a) Disconnect the speed sensor connector.
(b) Turn the ignition switch on.
(c) Measure the voltage.
Standard voltage
NG
OK
(a) Clear the DTC(s) (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at a speed of 12 mph (20 km/h) or more
for at least 60 seconds.
(d) Check if the same DTC(s) is output (See page BC-25).
Result
8 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - FRONT SPEED SENSOR)
1 23 4 5 6 7 8 9 10 11 12
13 14 1 5 16 17 18 19 20 21 22
25 26 2 7 28 29 30 3 1 32 3 3 34
23 24
1 2 1 2
Skid Control ECU
(harness side connector):
Front Speed Sensor
(harness side connector):
A15
A11 A7
FL+FL-
FR+FR-
FL+FL- FR+FR-
*1: LH
*2: RH
*1 *2
C117857E03
Tester Connection Specified Condition
A15-9 (FL+) - A11-2 (FL+) Below 1 Ω
A15-8 (FL-) - A11-1 (FL-) Below 1 Ω
Tester Connection Specified Condition
A15-31 (FR+) - A7-2 (FR+) Below 1 Ω
A15-30 (FR-) - A7-1 (FR-) Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
9 INSPECT FRONT SPEED SENSOR (INPUT VOLTAGE)
1 2 1 2
Front Speed Sensor
(harness side connecor):
A11 A7
FL+ FR+
*1: LH
*2: RH
*1 *2
C129353E01
Tester Connection Specified Condition
A11-2 (FL+) - Body ground 5.7 to 17.3 V
A7-2 (FR+) - Body ground 5.7 to 17.3 V
REPLACE BRAKE ACTUATOR
10 RECONFIRM DTC
Result Proceed to
DTC output A
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BC–46 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
B
A
(a) Replace the front speed sensor (See page BC-95).
NEXT
(a) Clear the DTC(s) (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at a speed of 12 mph (20 km/h) or more
for at least 60 seconds.(d) Check if the same DTC(s) is output (See page BC-25).
Result
B
A
DTC not output B
Result Proceed to
END
11 REPLACE FRONT SPEED SENSOR
12 RECONFIRM DTC
Result Proceed to
DTC output A
DTC not output B
END
REPLACE BRAKE ACTUATOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–47
DESCRIPTIONRefer to DTC C0200/31 (See page BC-37).
DTC C0210/33 Right Rear Wheel Speed Sensor Signal
DTC C0215/34 Left Rear Wheel Speed Sensor Signal
DTC C1238/38Foreign Object is Attached on Tip of Rear
Speed Sensor RH
DTC C1239/39Foreign Object is Attached on Tip of Rear
Speed Sensor LH
DTC C1273/73Low Output Signal of Rear Speed Sensor RH
(Test Mode DTC)
DTC C1274/74Low Output Signal of Rear Speed Sensor LH
(Test Mode DTC)
DTC C1277/77Abnormal Change in Output Signal of Rear
Speed Sensor RH (Test Mode DTC)
DTC C1278/78Abnormal Change in Output Signal of Rear
Speed Sensor LH (Test Mode DTC)
DTC No. DTC Detecting Conditions Trouble Areas
C0210/33
C0215/34
When any of following conditions detected:
1. At vehicle speed of 6 mph (10 km/h) or more, open
or short in sensor signal circuit continues for 1
second or more.
2. Momentary interruption of sensor signal from
abnormal wheel occurs 255 times or more.
3. Open in speed sensor signal circuit continues for
0.5 seconds or more.
4. With IG1 terminal voltage 9.5 V or more, sensor
power supply voltage decreases for 0.5 seconds or
more.
5. When vehicle driven at speed of more than 6 mph
(10 km/h), one of wheel speeds below one-seventh
of other wheel speeds for 15 seconds or more.
• Skid control sensor
• Skid control sensor circuit
• Sensor installation
• Brake actuator (skid control ECU)
C1238/38
C1239/39
When either of following conditions detected:
1. At vehicle speed of 12 mph (20 km/h) or more,
noise occurs 75 times or more in sensor signal from
abnormal wheel in 5 seconds.
2. At vehicle speed of 6 mph (10 km/h) or more, noise
input once per rotor rotation for 15 seconds or
more.
• Skid control sensor
• Skid control sensor circuit
• Brake actuator (skid control ECU)
C1273/73
C1274/74Detected only during test mode.
• Skid control sensor
• Skid control sensor circuit
• Sensor installation
C1277/77
C1278/78Detected only during test mode.
• Skid control sensor
• Skid control sensor circuit
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BC–48 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
HINT:
• DTC C0210/33 and C1238/38 relate to the skid control sensor RH.
• DTC C0215/34 and C1239/39 relate to the skid control sensor LH.
WIRING DIAGRAM
INSPECTION PROCEDURENOTICE:
Check the speed sensor signal in test mode after cleaning or replacement (See page BC-14).
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the tester on.
(d) Using the intelligent tester, check for any momentary
interruptions in the wire harness of the speed sensor.
Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / DATA LIST.
DATA LIST: ABS
OK:
There are no momentary interruptions.
1 CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)
Skid Control ECU
Skid Control
Sensor LH
Skid Control
Sensor RH
RL+
RR-
RL-
RR+
C117849E04
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Measurement Item / Range (Display) Normal Condition
RR SPD OPNRR speed sensor open detection / ERROR or
NORMAL
ERROR: Momentary interruption
NORMAL: Normal
RL SPD OPNRL speed sensor open detection / ERROR or
NORMAL
ERROR: Momentary interruption
NORMAL: Normal
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–49
HINT:
Perform this inspection before removing the sensor and
connector.
NG
OK
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and drive the vehicle.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / DATA LIST.
(e) Select the item "RR (RL) WHEEL SPD" in the DATA
LIST and read the value displayed on the intelligent
tester.
DATA LIST: ABS
(f) Check that there is no significant difference between the
speed value displayed on the intelligent tester and the
speed value displayed on the speedometer when driving
the vehicle.
OK:
There is no significant difference in the displayed
speed values.HINT:
There is a tolerance of +- 10% in the speedometer
indication.
NG
OK
(a) Perform a TEST MODE inspection and check for DTCs(See page BC-14).
OK:
No DTCs output.
NG
OK
REPAIR OR REPLACE HARNESS OR
CONNECTOR
2 READ VALUE OF DATA LIST (SKID CONTROL SENSOR)
Item (Display) Measurement Item / Range (Display) Normal Condition
RR WHEEL SPDWheel speed sensor (RR) reading : min.: 0 mph
(0 km/h), max.: 202 mph (326 km/h)Similar to speed indicated on speedometer
RL WHEEL SPDWheel speed sensor (RL) reading : min.: 0 mph
(0 km/h), max.: 202 mph (326 km/h)Similar to speed indicated on speedometer
Go to step 5
3 PERFORM TEST MODE INSPECTION (SIGNAL CHECK)
REPAIR OR REPLACE HARNESS OR
CONNECTOR
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BC–50 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
(a) Clear the DTC(s) (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at a speed of 12 mph (20 km/h) or more
for at least 60 seconds.
(d) Check if the same DTC(s) is output (See page BC-25).Result
B
A
(a) Visually check the skid control sensor for deformation
and damage.
OK:
No deformation or damage.
No gap between the sensor and rear axle carrier.
NG
OK
4 RECONFIRM DTC
Result Proceed to
DTC not output A
DTC output B
Go to step 10
END
5 CHECK SKID CONTROL SENSOR
OK NG
C118693E01
REPLACE SKID CONTROL SENSOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–51
(a) Disconnect the skid control sensor wire.
(b) Measure the resistance.
Standard resistance (LH)
Standard resistance (RH)
NG
OK
(a) Disconnect the skid control ECU connector.
(b) Disconnect the skid control sensor connector.
(c) Measure the resistance.
Standard resistance (LH)
Standard resistance (RH)
NG
6 INSPECT SKID CONTROL SENSOR WIRE
1 21 2
Skid Control Sensor Wire:
Sensor Side
Connector
Vehicle Side
Connector
a1 aJ1 ZJ1Z1
C129355E01
Tester Connection Specified Condition
a1-1 - aJ1-1 Below 1 Ω
a1-1 - aJ1-2 10 kΩ or higher
a1-1 - Body ground 10 kΩ or higher
a1-2 - aJ1-1 10 kΩ or higher
a1-2 - aJ1-2 Below 1 Ω
a1-2 - Body ground 10 kΩ or higher
Tester Connection Specified Condition
Z1-1 - ZJ1-1 Below 1 Ω
Z1-1 - ZJ1-2 10 kΩ or higher
Z1-1 - Body ground 10 kΩ or higher
Z1-2 - ZJ1-1 10 kΩ or higher
Z1-2 - ZJ1-2 Below 1 Ω
Z1-2 - Body ground 10 kΩ or higher
REPLACE SKID CONTROL SENSOR WIRE
7 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR SPEED SENSOR)
1 23 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 1 9 20 21 22
25 26 27 28 29 30 31 32 33 34
23 24
Skid Control ECU
(harness side connector):
RL+
RL-
RR+RR-Skid Control Sensor
(sensor side connector):
RR+RR-RL+RL-
a1
A15
Z1
*1: LH
*2: RH
*1 *2
C129356E01
Tester Connection Specified Condition
A15-11 (RL+) - a1-2 (RL+) Below 1 Ω
A15-12 (RL-) - a1-1 (RL-) Below 1 Ω
Tester Connection Specified Condition
A15-33 (RR+) - Z1-2 (RR+) Below 1 Ω
A15-34 (RR-) - Z1-1 (RR-) Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–53
B
A
END
REPLACE BRAKE ACTUATOR
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BC–54 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
DESCRIPTIONThis solenoid is turned on in accordance with signals from the skid control ECU and controls the pressure
on the wheel cylinders to control the braking force.
HINT:C0226/21, C0236/22, C0246/23 and C0256/24:
The skid control ECU begins to detect these DTCs when the vehicle speed exceeds 4 mph (6 km/h).
DTC C0226/21 SFR Solenoid Circuit
DTC C0236/22 SFL Solenoid Circuit
DTC C0246/23 SRR Solenoid Circuit
DTC C0256/24 SRL Solenoid Circuit
DTC No. DTC Detecting Condition Trouble Area
C0226/21
C0236/22
C0246/23
C0256/24
Open or short in solenoid circuit continues for 0.05
seconds or more.Brake actuator
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–55
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Clear the DTC(s) (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at 4 mph (6 km/h) or more to activate
the initial check.
(d) Check if the same DTC(s) is output (See page BC-25).
Result
1 RECONFIRM DTC
M
Solenoid RelayMotor Relay
Skid Control ECU with Actuator
+BS+BM GND2
ABS2/VSC2 ABS1/
VSC1
GND1
ALT
Battery
C136887E01
Result Proceed to
DTC output A
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BC–56 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
HINT:
The DTCs may be stored due to a malfunction in the
connector terminal.
B
A
DTC not output B
Result Proceed to
END
REPLACE BRAKE ACTUATOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–57
DESCRIPTIONThe ABS motor relay supplies the power to the ABS pump motor. While the ABS is activated, the skid
control ECU switches the motor relay ON and operates the ABS pump motor.
HINT:
C0273/13 and C0274/14: The skid control ECU begins to detect these DTCs when the vehicle speed
exceeds 4 mph (6 km/h).
WIRING DIAGRAMSee page BC-52.
INSPECTION PROCEDURE
(a) Remove the ABS1/VSC1 fuse from the engine room R/
B.
(b) Measure the resistance.
Standard resistance:
Below 1 Ω
NG
OK
DTC C0273/13 Open in ABS Motor Relay Circuit
DTC C0274/14 Short to B+ in ABS Motor Relay Circuit
DTC No. DTC Detecting Conditions Trouble Areas
C0273/13
When either of following conditions (1 or 2) detected:
1. All of following conditions continue for 0.2 seconds
or more.
(a) IG1 terminal voltage between 9.5 V and 17.2 V.
(b) During initial check or ABS operation.
(c) Relay contact open when relay on.
2. Both of following conditions continue for 0.2
seconds or more.
(a) IG1 terminal voltage 9.5 V or less.
(b) Relay contact remains open when relay on.
• ABS1/VSC1 fuse
• Wire harness (+BM circuit)
• Brake actuator (skid control ECU)
C0274/14When motor relay off, motor relay remains closed for 4
seconds or more.
• ABS1/VSC1 fuse
• Wire harness (+BM circuit)
• Brake actuator (skid control ECU)
1 INSPECT FUSE (ABS1/VSC1)
Engine Room R/B:
ABS1/VSC1 fuse
C117863E05
CHECK FOR SHORTS IN ALL HARNESSES
AND CONNECTORS CONNECTED TO FUSE
AND REPLACE FUSE
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–59
(c) Drive the vehicle at 4 mph (6 km/h) or more to activate
the initial check.
(d) Check if the same DTC(s) is output (See page BC-25).
Result
B
A
Result Proceed to
DTC output A
DTC not output B
END
REPLACE BRAKE ACTUATOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–61
OK
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage.
Standard voltage
(c) Measure the resistance.
Standard resistance
NG
OK
(a) Clear the DTC(s) (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at 4 mph (6 km/h) or more to activate
the initial check.
(d) Check if the same DTC(s) is output (See page BC-25).Result
B
A
2 CHECK HARNESS AND CONNECTOR (BATTERY - SKID CONTROL ECU - BODY
GROUND)
+BS GND1
GND2
Skid Control ECU
(harness side connector):
A15
C117862E01
Tester Connection Specified Condition
A15-1 (+BS) - Body ground 11 to 14 V
Tester Connection Specified Condition
A15-2 (GND1) - Body ground Below 1 Ω
A15-24 (GND2) - Body ground Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
3 RECONFIRM DTC
Result Proceed to
DTC output A
DTC not output B
END
REPLACE BRAKE ACTUATOR
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BC–62 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
DESCRIPTIONWhen there is an abnormality in the power supply circuit of the brake actuator (skid control ECU), the skid
control ECU sets a DTC and the operation is prohibited by the fail-safe function. This DTC is set when the
voltage supplied to terminal IG1 is outside the DTC detection threshold, due to abnormalities in thebattery, power source circuits or charging circuits such as the alternator circuit.
The fail-safe function is canceled when the voltage to terminal IG1 returns to normal.
WIRING DIAGRAM
DTC C1241/41Low Battery Positive Voltage or Abnormally
High Battery Positive Voltage
DTC No. DTC Detecting Conditions Trouble Areas
C1241/41
When any of following conditions detected:
1. At vehicle speed of 2 mph (3 km/h) or more, IG1
terminal voltage 9.5 V or less for 10 seconds or
more.
2. When IG1 terminal voltage below 9.5 V, relay off
condition continues for 0.2 seconds or more despite
ECU turning motor relay on.
3. When IG1 terminal voltage below 9.5 V, wheel
speed sensor power source voltage decreases for
60 seconds or more.
• Battery
• Charging system
• ECU-IG fuse
• AM1 fuse
• IG1 relay
• Brake actuator (skid control ECU)
Skid Control ECU
IG1
IG1
GND1
GND2
ECU-IG
ALT
Ignition Switch
AM1
Battery
C117855E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–63
INSPECTION PROCEDURE
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch on.
(c) Measure the voltage.
Standard voltage
NG
OK
(a) Clear the DTC (See page BC-25).
(b) Drive the vehicle at 2 mph (3 km/h) or more for several
seconds.
(c) Check if the same DTC is output (See page BC-25).
Result
B
A
1 CHECK SKID CONTROL ECU TERMINAL VOLTAGE
Skid Control ECU
(harness side connector):
IG1
A15
C117862E04
Tester Connection Specified Condition
A15-25 (IG1) - Body ground 11 to 14 V
Go to step 3
2 RECONFIRM DTC
Result Proceed to
DTC output A
DTC not output B
END
REPLACE BRAKE ACTUATOR
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BC–64 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
(a) Remove the ECU-IG fuse and AM1 fuse from the main
body ECU.
(b) Measure the resistance.
Standard resistance:
Below 1 Ω
NG
OK
(a) Check the battery voltage.
Standard voltage:
11 to 14 V
NG
OK
3 INSPECT FUSES (ECU-IG, AM1)
Main Body ECU:
ECU-IG AM1C118694E01
CHECK FOR SHORTS IN ALL HARNESSES
AND CONNECTORS CONNECTED TO FUSE
AND REPLACE FUSE
4 INSPECT BATTERY
CHECK CHARGING SYSTEM
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–65
(a) Remove the IG1 relay from the main body ECU.
(b) Measure the resistance.
Standard resistance
NG
OK
5 INSPECT IG1 RELAY
Main Body ECU:
IG1 Relay
C118689E01
C113445
Tester Connection Condition Specified Condition
3 - 5 Always 10 kΩ or higher
3 - 5Apply B+ between
terminals 1 and 2Below 1 Ω
REPLACE IG1 RELAY
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BC–68 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS / OBD/MOBD / select vehicle / ABS / DATA LIST.
DATA LIST: ABS
(e) Check that "STOP LAMP SW" is turned ON and OFF
when the brake pedal is depressed and released.
OK:
"STOP LAMP SW" is turned ON and OFF in
accordance with the operation of the brake pedal.
NG
OK
(a) Disconnect the skid control ECU connector.
(b) Measure the voltage.
Standard voltage
NG
OK
1 CHECK STOP LIGHT SWITCH OPERATION
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Measurement Item / Range (Display) Normal Conditions
STOP LAMP SW Stop light switch / ON or OFFON: Brake pedal depressed
OFF: Brake pedal released
Go to step 3
2 CHECK SKID CONTROL ECU TERMINAL VOLTAGE (STP)
STP
Skid Control ECU
(harness side connector):
A15
C117862E05
Tester Connection Switch Condition Specified Condition
A15-10 (STP) - Body
groundBrake pedal depressed 8 to 14 V
A15-10 (STP) - Body
groundBrake pedal released Below 4.0 V
Go to step 5
REPLACE BRAKE ACTUATOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–69
(a) Remove the STOP fuse from the main body ECU.
(b) Measure the resistance.
Standard resistance:
Below 1 Ω
NG
OK
(a) Disconnect the stop light switch connector.
(b) Measure the resistance.
Standard resistance
NG
OK
3 INSPECT FUSE (STOP)
Main Body ECU:
STOPC118695E01
CHECK FOR SHORTS IN ALL HARNESSES
AND CONNECTORS CONNECTED TO FUSE
AND REPLACE FUSE
4 INSPECT STOP LIGHT SWITCH ASSEMBLY
Stop Light Switch:
Released Pushed in
2 1
4 3
C118699E04
Tester Connection Switch Condition Specified Condition
1 - 2 Switch pin released Below 1 Ω
3 - 4 Switch pin released 10 kΩ or higher
1 - 2 Switch pin pushed in 10 kΩ or higher
3 - 4 Switch pin pushed in Below 1 Ω
REPLACE STOP LIGHT SWITCH ASSEMBLY
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BC–70 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
(a) Disconnect the skid control ECU connector.
(b) Disconnect the stop light switch connector.
(c) Measure the resistance.
Standard resistance
NG
OK
(a) Clear the DTC (See page BC-25).
(b) Check if the same DTC is output (See page BC-25).
Result
B
A
5 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - STOP LIGHT SWITCH)
Skid Control ECU
(harness side connector):
A15
Stop Light Switch(harness side connector):
A13
STP
A13-1
C118696E01
Tester Connection Specified Condition
A15-10 (STP) - A13-1 Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
6 RECONFIRM DTC
Result Proceed to
DTC output A
DTC not output B
END
REPLACE BRAKE ACTUATOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–71
DESCRIPTIONThe motor relay (semiconductor relay) is housed in the skid control ECU and drives the pump motor
based on a signal from the skid control ECU.
WIRING DIAGRAMSee page BC-52.
INSPECTION PROCEDURE
(a) Check that the battery voltage, power source voltage,
and the ground condition of the skid control ECU are
normal.
OK:
The battery voltage, power source voltage, and the
ground condition of the skid control ECU are
normal.
NG
OK
(a) Clear the DTC (See page BC-25).
(b) Start the engine.
(c) Drive the vehicle at a speed of 4 mph (6 km/h) or more
for several seconds.
(d) Check if the same DTC is output (See pageBC-25 ).
Result
B
A
DTC C1251/51 Open in Pump Motor Circuit
DTC No. DTC Detecting Conditions Trouble Areas
C1251/51
When either of following conditions detected:1. Actuator pump motor does not operate properly.
2. Open in actuator pump motor circuit continues for
at least 2 seconds.
Brake actuator
1 CHECK POWER SOURCE CIRCUIT
REPAIR POWER SOURCE CIRCUIT
2 RECONFIRM DTC
Result Proceed to
DTC output A
DTC not output B
END
REPLACE BRAKE ACTUATOR
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BC–72 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
DESCRIPTION
INSPECTION PROCEDURE
(a) Clear the DTC (See page BC-25).
(b) Check if the same DTC is output (See page BC-25).
Result
B
A
DTC U0073/94 Control Module Communication Bus OFF
DTC No. DTC Detecting Conditions Trouble Areas
U0073/94
When either of following conditions detected:
1. After data output from skid control ECU completed,
output continues for 5 seconds or more.
2. Bus off condition occurs once or more per 0.1
second 10 times in succession.
CAN communication system
1 RECONFIRM DTC
Result Proceed to
DTC output A
DTC not output B
END
REPAIR CAN COMMUNICATION SYSTEM
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–73
DESCRIPTIONIf any of the following conditions are detected, the ABS warning light remains on:
1. The ECU connectors are disconnected from the skid control ECU.
2. There is a malfunction in the skid control ECU internal circuit.
3. There is an open or short in the wire harness between the combination meter and the skid control
ECU.
HINT:
The intelligent tester may not be used when there is a malfunction in the skid control ECU.
WIRING DIAGRAM
ABS Warning Light Remains ON
Skid Control ECU
Combination Meter
AM2MAIN
MET ABS
CPU
IG2
CANL
CANH
Ignition Switch
CAN I/F
CAN Controller
LED Driver
Battery
C117853E01
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BC–74 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
INSPECTION PROCEDURE
(a) Check if the CAN communication system DTC is output
(See page CA-22).
Result
B
A
(a) Check the skid control ECU connector condition.OK:
The connector is securely connected.
NG
OK
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the tester on.(d) Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / ACTIVE TEST / ABS
WARN LAMP.
ACTIVE TEST: ABS
(e) Check that the ABS warning light turns on and off in the
combination meter using the intelligent tester.
OK:
The ABS warning light turns ON and OFF in
accordance with the intelligent tester operation.
HINT:
When the ABS warning light remains illuminated, an
open in the wire harness of the combination meter or
abnormalities in the meter circuit should be considered.
NG
1 CHECK CAN COMMUNICATION SYSTEM
Result Proceed to
DTC not output A
DTC output B
REPAIR CAN COMMUNICATION SYSTEM
2 CHECK CONNECTOR CONNECTION CONDITION
CONNECT CONNECTOR CORRECTLY
3 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ABS WARNING LIGHT)
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Test Details Diagnostic Notes
ABS WARN LAMP Turns ABS warning light ON and OFF Observe combination meter
CHECK COMBINATION METER CIRCUIT
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–75
OK
REPLACE BRAKE ACTUATOR
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BC–76 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
WIRING DIAGRAMSee page BC-70.
INSPECTION PROCEDURE
(a) Check if the CAN communication system DTC is output
(See page CA-22).
Result
B
A
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / ACTIVE TEST / ABS
WARN LAMP.
ACTIVE TEST: ABS
(e) Check that the ABS warning light turns on and off in the
combination meter using the intelligent tester.
OK:
The ABS warning light turns ON and OFF in
accordance with the intelligent tester operation.
NG
OK
ABS Warning Light does not Come ON
1 CHECK CAN COMMUNICATION SYSTEM
Result Proceed to
DTC not output A
DTC output B
REPAIR CAN COMMUNICATION SYSTEM
2 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ABS WARNING LIGHT)
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Test Details Diagnostic Notes
ABS WARN LAMP Turns ABS warning light ON and OFF Observe combination meter
CHECK COMBINATION METER CIRCUIT
REPLACE BRAKE ACTUATOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–77
DESCRIPTIONIf any of the following conditions are detected, the BRAKE warning light remains on:
1. The ECU connectors are disconnected from the skid control ECU.
2. The brake fluid level is insufficient.
3. The parking brake is applied.
4. The EBD is defective.
WIRING DIAGRAM
Brake Warning Light Remains ON
Combination Meter
Skid Control ECU
CAN I/F
CAN Controller
CPU
Main Body ECU
CANH
CANL
CANL
CANH
IG2
Brake Fluid
Level Warning
Switch
MET
AM2MAIN
Ignition Switch
Parking Brake
Switch
LED Driver
BRAKE
PKB
Battery
C139985E01
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BC–78 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
INSPECTION PROCEDURE
(a) Check that both of the following conditions are satisfied.
• The brake fluid level in the brake master cylinder
reservoir is correct.• The parking brake is released.
HINT:
When the ABS warning light remains illuminated, repair
the malfunctions in the ABS system first.
NEXT
(a) Check if any ABS DTCs are output (See page BC-25).
Result
B
A
(a) Check if the CAN communication system DTC is output
(See page CA-22).
Result
B
A
(a) Check if the skid control ECU connector is connected
securely.
OK:
The connector is connected securely.
NG
1 PREPARE FOR INSPECTION
2 CHECK DTC
Result Proceed to
DTC not output A
DTC output B
REPAIR CIRCUITS INDICATED BY OUTPUT
DTCS
3 CHECK CAN COMMUNICATION SYSTEM
Result Proceed to
DTC not output A
DTC output B
REPAIR CAN COMMUNICATION SYSTEM
4 CHECK CONNECTOR CONNECTION CONDITION
CONNECTOR CORRECTLY
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–79
OK
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the tester on.(d) Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle / ABS / DATA LIST / PARKING
BRAKE SW.
DATA LIST: ABS
(e) Check that "ON" and "OFF" are properly indicated on the
tester display in accordance with the parking brake lever
operation.
OK:
Tester display changes in accordance with the
parking brake lever operation.
NG
OK
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the brake fluid level warning switch
connector.
(c) Measure the resistance.
HINT:
There is a float inside the reservoir. Its position can be
changed by increasing or decreasing the brake fluid
level.
Standard resistance
HINT:
If there is no problem after the above check is finished,
adjust the brake fluid level to the MAX level.
NG
5 CHECK PARKING BRAKE SWITCH ASSEMBLY
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Measurement Item / Range (Display) Normal Condition
PARKING BRAKE SW Parking brake switch / ON or OFFON: Parking brake applied
OFF: Parking brake released
Go to step 9
6 INSPECT BRAKE FLUID LEVEL WARNING SWITCH
12
Brake Fluid Level Warning Switch:
A10
C118697E01
Tester Connection Condition Specified Condition
A10-1 - A10-2 Float up (Switch OFF) 1.9 to 2.1 kΩ
A10-1 - A10-2 Float down (Switch ON) Below 1 Ω
REPLACE BRAKE MASTER CYLINDER
RESERVOIR SUB-ASSEMBLY
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BC–80 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
OK
(a) Disconnect the D2 combination meter connector.
(b) Disconnect the brake fluid level warning switch
connector.
(c) Measure the resistance.
Standard resistance
NG
OK
(a) Inspect the combination meter assembly (See page ME-
24 or ME-88).
NG
OK
(a) Disconnect the parking brake switch connector.
7 CHECK HARNESS AND CONNECTOR (COMBINATION METER - BRAKE FLUID LEVEL
WARNING SWITCH)
1 2
1 2
3 4 5 6 7 8
9 10111213141516
Brake Fluid Level Warning Switch
(harness side connector):
Combination Meter (harness side connector):
D2
A10
D2-2C118702E01
Tester Connection Specified Condition
D2-2 - A10-1 Below 1 Ω
D2-2 - Body ground 10 kΩ or higher
A10-2 - Body ground 10 kΩ or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
8 INSPECT COMBINATION METER
REPLACE COMBINATION METER
REPLACE BRAKE ACTUATOR
9 INSPECT PARKING BRAKE SWITCH ASSEMBLY
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BC–82 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
WIRING DIAGRAMSee page BC-74.
INSPECTION PROCEDURE
(a) Check if the CAN communication system DTC is output
(See page CA-22).
Result
B
A
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch on.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS / OBD/
MOBD / select vehicle /ACTIVE TEST / BRAKE WARN
LAMP.
ACTIVE TEST: ABS
(e) Check that the BRAKE warning light turns on and off in
the combination meter using the intelligent tester.
OK:
The BRAKE warning light turns ON and OFF in
accordance with the intelligent tester operation.
OK
NG
(a) Inspect the combination meter (See page ME-24 or ME-
84).
Brake Warning Light does not Come ON
1 CHECK CAN COMMUNICATION SYSTEM
Result Proceed to
DTC not output A
DTC output B
REPAIR CAN COMMUNICATION SYSTEM
2 PERFORM ACTIVE TEST USING INTELLIGENT TESTER (BRAKE WARNING LIGHT)
Intelligent Tester
CAN VIMDLC3
C115104E01
Item (Display) Test Details Diagnostic Note
BRAKE WARN LAMP Turns BRAKE warning light ON and OFF Observe combination meter
REPLACE BRAKE ACTUATOR
3 INSPECT COMBINATION METER
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–83
NG
OK
REPLACE COMBINATION METER
REPLACE BRAKE ACTUATOR
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BC–84 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
DESCRIPTIONConnecting terminals TC and CG of the DLC3 causes the skid control ECU to display 2-digit DTCs by
flashing the ABS warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Turn the ignition switch off.
(b) Disconnect the ECM connector.
TC and CG Terminal Circuit
1 CHECK HARNESS AND CONNECTOR (DLC3 - ECM)
Skid Control ECU
CANH
CANL
CANH
CANL
ECM
CG
TCTC
DLC3
C118698E01
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–85
(c) Measure the resistance.
Standard resistance
NG
OK
(a) Measure the resistance.
Standard resistance
NG
OK
(a) Disconnect the ECM connector.(b) Measure the resistance.
Standard resistance
NG
161514131211109
87654321
DLC3:
ECM:
TC
TC
D15
A21
H100899E01
Tester Connection Specified Condition
D15-13 (TC) - A21-27 (TC) Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
2 CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)
161514131211109
87654321
DLC3:
CG
D15
F100115E26
Tester Connection Specified Condition
D15-4 (CG) - Body ground Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
3 CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)
TC
ECM:
A21
G100098E01
Tester Connection Specified Condition
A21-27 (TC) - Body ground 10 kΩ or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
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BC–86 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
OK
(a) Replace the ECM.
(b) Check for DTCs of the ECM (See page ES-34).
Result
B
A
4 REPLACE ECM
Result Proceed to
DTC not output A
DTC output B
REPAIR CIRCUITS INDICATED BY OUTPUT
DTCS
END
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–87
DESCRIPTIONIn sensor check mode, malfunctions of the speed sensor that cannot be detected when the vehicle is
stopped can be detected by driving the vehicle.
Transition to sensor check mode can be performed by connecting terminals TS and CG of the DLC3 and
turning the ignition switch from off to on.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Turn the ignition switch off.
(b) Disconnect the power steering ECU connector.
TS and CG Terminal Circuit
1 CHECK HARNESS AND CONNECTOR (DLC3 - POWER STEERING ECU)
Skid Control ECU
CANH
CANL
CANH
CANL
CG
TSTS
DLC3
Power Steering ECU
C118698E02
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BC–88 BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
C
(c) Measure the resistance.
Standard resistance
NG
OK
(a) Measure the resistance.
Standard resistance
NG
OK
(a) Disconnect the power steering ECU connector.(b) Measure the resistance.
Standard resistance
NG
161514131211109
87654321
1 2 3 4 5 6
7 8 9 101112
DLC3:
Power Steering ECU:
D15
D31
TS
TSC120359E01
Tester Connection Specified Condition
D15-12 (TS) - D31-11 (TS) Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
2 CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)
161514131211109
87654321
DLC3:
CG
D15
F100115E26
Tester Connection Specified Condition
D15-4 (CG) - Body ground Below 1 Ω
REPAIR OR REPLACE HARNESS OR
CONNECTOR
3 CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BODY GROUND)
1 2 3 4 5 6
7 8 9 101112
Power Steering ECU:
D31
TSC118701E01
Tester Connection Specified Condition
D31-11 (TS) - Body ground 10 kΩ or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
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BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM BC–89
OK
(a) Replace the power steering ECU.
(b) Check for DTCs of the power steering ECU (See page
PS-25).Result
B
A
4 REPLACE POWER STEERING ECU
Result Proceed to
DTC not output A
DTC output B
REPAIR CIRCUITS INDICATED BY OUTPUT
DTCS
END
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BRAKE CONTROL – BRAKE ACTUATORBC–87
BRAKEBRAKECONTROL
BRAKE ACTUATOR
COMPONENTS
17 (175, 13)
BATTERY CARRIER
BATTERY TRAY
BATTERY CLAMP
SUB-ASSEMBLY
N*m (kgf*cm, ft*lbf) : Specified torque
3.5 (36, 31 in.*lbf)
x5
BATTERY
C107526E05
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BC–88BRAKE CONTROL – BRAKE ACTUATOR
C
N*m (kgf*cm, ft*lbf) : Specified torque Non-reusable part
BRAKE TUBE CLAMP
5.4 (55, 48 in.*lbf)
BRAKE
ACTUATOR
BRAKE ACTUATORBRACKET ASSEMBLY
19 (194, 14)
19 (194, 14)
BRAKE TUBE
BRAKE TUBE
BRAKE TUBE
19 (194, 14)BRAKE ACTUATOR
CONNECTOR
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
15 (155, 11)
14 (143, 10)*
* For use with SST
C116920E03
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BRAKE CONTROL – BRAKE ACTUATOR BC–89
REMOVAL1. DRAIN BRAKE FLUID
NOTICE:
Immediately wash off any brake fluid that comes into
contact with any painted surfaces.
2. REMOVE BATTERY (See page EM-122)
3. REMOVE BATTERY TRAY
4. REMOVE BATTERY CARRIER (See page EM-125)
5. REMOVE BRAKE ACTUATOR
(a) Remove the clip and disconnect the wire harness.
(b) Move the lock lever in the direction indicated by the
arrow to release the lock and disconnect the brake
actuator connector from the actuator.
(c) Using SST, separate the brake tube from the front
flexible hose.
SST 09023-00100
(d) Using SST, separate the 2 brake tubes from the
brake tube No. 1 way.
SST 09023-00100
(e) Using SST, separate the 2 brake tubes from the
brake master cylinder.
SST 09023-00100
C121850
SST
C116914E01
SST
C116915E01
SST
C121690E01
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BRAKE CONTROL – BRAKE ACTUATOR BC–91
6. REMOVE BRAKE ACTUATOR BRACKET ASSEMBLY
(a) Remove the 2 nuts and the bracket.
INSTALLATION1. INSTALL BRAKE ACTUATOR BRACKET ASSEMBLY
(a) Install the actuator bracket with the 2 nuts.
Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf)
NOTICE:
Do not remove the hole plug before connecting
the brake tube. New actuators are filled with
brake fluid.
2. INSTALL BRAKE ACTUATOR
(a) Provisionally install the 3 bolts onto the actuator
bracket in the sequence shown in the illustration.
(b) Tighten the 3 bolts in the sequence shown in the
illustration.
Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf)
(c) Connect a new brake tube clamp.
C121843
C121843
1
2
3
C116921E01
C116918
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BC–92 BRAKE CONTROL – BRAKE ACTUATOR
C
(d) Using SST, install each brake tube into the correct
position of the actuator, as shown in the illustration.
SST 09023-00100
Torque: for use without SST
15 N*m (155 kgf*cm, 11 ft.*lbf)
for use with SST
14 N*m (143 kgf*cm, 10 ft.*lbf)
HINT:
• Use a torque wrench with a fulcrum length of 300
mm (11.81 in.).
• This torque value is effective when SST is
parallel to a torque wrench.
(e) Using SST, install the 2 brake tubes onto the brake
master cylinder.
SST 09023-00100
Torque: for use without SST15 N*m (155 kgf*cm, 11 ft.*lbf)
for use with SST
14 N*m (143 kgf*cm, 10 ft.*lbf)
HINT:
• Use a torque wrench with a fulcrum length of 300
mm (11.81 in.).
• This torque value is effective when SST is
parallel to a torque wrench.
(f) Using SST, install the 2 brake tubes onto the brake
tube No. 1 way.
SST 09023-00100Torque: for use without SST
15 N*m (155 kgf*cm, 11 ft.*lbf)
for use with SST
14 N*m (143 kgf*cm, 10 ft.*lbf)
HINT:
• Use a torque wrench with a fulcrum length of 300
mm (11.81 in.).
• This torque value is effective when SST is
parallel to a torque wrench.
(g) Using SST, install the brake tube onto the front
flexible hose.
SST 09023-00100
Torque: for use without SST
15 N*m (155 kgf*cm, 11 ft.*lbf)
for use with SST
14 N*m (143 kgf*cm, 10 ft.*lbf)
HINT:
• Use a torque wrench with a fulcrum length of 300
mm (11.81 in.).
• This torque value is effective when SST is
parallel to a torque wrench.
(h) Connect the brake actuator connector.
To Master
Cylinder
To Rear
Wheel RH
To Rear Wheel LH
To Front
Wheel RH
To FrontWheel LH
To Master
Cylinder
C116917E01
SST
C121690E01
SST
C116915E01
SST
C116914E01
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BRAKE CONTROL – BRAKE ACTUATOR BC–93
3. INSTALL BATTERY CARRIER (See page EM-145)
4. INSTALL BATTERY TRAY
5. INSTALL BATTERY (See page EM-148)
6. FILL RESERVOIR WITH BRAKE FLUID (See page BR-
10)
7. BLEED MASTER CYLINDER (See page BR-10)
8. BLEED BRAKE LINE (See page BR-12)
9. CHECK FLUID LEVEL IN RESERVOIR (See page BR-
12)
10. CHECK FOR BRAKE FLUID LEAKAGE
11. CHECK ACTUATOR WITH INTELLIGENT TESTER
(See page BC-14)
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BC–94 BRAKE CONTROL – FRONT SPEED SENSOR
C
BRAKEBRAKECONTROL
FRONT SPEED SENSOR
COMPONENTS
29 (300, 22)
N*m (kgf*cm, ft*lbf) :Specified torque
6.0 (61, 53 in.*lbf)
8.5 (87, 75 in.*lbf)
FRONT FENDER LINER
FRONT SPEED SENSOR
C125281E01
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BRAKE CONTROL – FRONT SPEED SENSOR BC–95
REMOVAL1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE FRONT WHEEL
3. REMOVE FRONT FENDER LINER
(a) Remove the 3 screws, 6 clips and 4 grommets and
remove the front fender liner.
4. REMOVE FRONT SPEED SENSOR
(a) Remove the speed sensor clip from the body.
(b) Disconnect the speed sensor connector.
(c) Remove the 3 clips.
(d) Remove the bolt and separate the clamp from the
body.
(e) Remove the bolt and separate the clamp from the
shock absorber.
(f) Remove the bolt and remove the speed sensor from
the steering knuckle.
NOTICE:
• Keep the speed sensor tip and installation
portion free of foreign matter.• Remove the speed sensor without turning it
from its original installation angle.
C121848
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BC–96 BRAKE CONTROL – FRONT SPEED SENSOR
C
INSPECTION1. INSPECT FRONT SPEED SENSOR
(a) Check the connector case and terminals for any
deformation or corrosion.
Standard:
No deformation or corrosion.
If necessary, replace the speed sensor.
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BRAKE CONTROL – SKID CONTROL SENSOR BC–99
REMOVAL1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
2. REMOVE REAR WHEEL
3. REMOVE REAR BRAKE DRUM SUB-ASSEMBLY (See
page BR-60)
4. DISCONNECT SKID CONTROL SENSOR WIRE (See
page AH-14)
5. REMOVE REAR AXLE HUB AND BEARING
ASSEMBLY (See page AH-14)
6. REMOVE SKID CONTROL SENSOR
(a) Install the 4 hub nuts and the 4 hub bolts onto the
rear axle hub, and then fix the rear axle hub in a vice
between aluminum plates.
NOTICE:
If the skid control sensor is dropped or heavily
damaged, replace the rear axle hub and bearing.
(b) Using a 3 mm pin punch and hammer, remove the 2
pins from SST (09520-00031) and remove the
attachment (09521-00010).
(c) Using SST and the 2 bolts (90101-12007), remove
the skid control sensor from the rear axle hub.
SST 09520-00031 (09520-00040), 09521-00020,
09950-00020
NOTICE:
• Pull the skid control sensor off straight, being
careful not to make contact with the skid
control sensor rotor.
• If the skid control sensor rotor is damaged ordeformed, replace the rear axle hub and
bearing.
• Do not damage the skid control sensor or
rear axle hub contact surfaces.
• Keep the sensor rotor free of foreign matter.
SST
Bolt
SST
Rotor
Sensor Probe
C108982E01
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BC–100 BRAKE CONTROL – SKID CONTROL SENSOR
C
INSPECTION1. INSPECT SKID CONTROL SENSOR
(a) Check the connector case and terminals for any
deformation or corrosion.
Standard:
No deformation or corrosion.
If necessary, replace the speed sensor.
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